This advisory also applies to the corresponding versions ofKubuntu, Edubuntu, and Xubuntu.

The problem can be corrected by upgrading your system to thefollowing package versions:

Ubuntu 6.06 LTS: squid 2.5.12-4ubuntu2.2

Ubuntu 6.10: squid 2.6.1-3ubuntu1.2

In general, a standard system upgrade is sufficient to effect thenecessary changes.

Details follow:

David Duncan Ross Palmer and Henrik Nordstrom discovered that squid incorrectly handled special characters in FTP URLs. Remote users with access to squid could crash the server leading to a denial of service. (CVE-2007-0247)

Erick Dantas Rotole and Henrik Nordstrom discovered that squid could end up in an endless loop when exhausted of available external ACL helpers. Remote users with access to squid could cause CPU starvation, possibly leading to a denial of service. This does not affect a default Ubuntu installation, since external ACL helpers must be configured and used.(CVE-2007-0248)